Oligotoma nigra

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Oligotoma nigra
Oligotoma nigra.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Embioptera
Family: Oligotomidae
Genus: Oligotoma
Species:
O. nigra [1]
Binomial name
Oligotoma nigra [1]
Hagen, 1885 [2]
Synonyms [2]
  • Oligotoma californica (Banks, 1906)
  • Oligotoma mesopotamica Ross, 1966

Oligotoma nigra, also known as the black webspinner, is a species of insect in the order Embiidina, also known as Embioptera. [1]

Contents

Description

The adult of this species tends to be entirely dark brown or black. They reach approximately 9mm in length. Females tend to be redder in body color than males are. Only adult males have wings and are capable of flying. [3] Adult males, unlike adult females, have an affinity for light. [4] The nymphs are much paler than adults, and they darken in color as they mature. [3]

Life cycle

The entire life cycle of the black webspinner is typically completed within a year. They are a hemimetabolous insect species, meaning that they have incomplete metamorphosis. During developmental stages the nymphs produce silk from silk glands. The glands are located on the basal segment of the foretarsus. they use this ability to create silk tunnels for protection from predators and to store food. Eggs are laid within the silk tunnels. When the nymphs hatch they expand the network of tunnels. This network continues to expand as the insect matures. The vast majority of their life is spent within the silk tunnel. [3]

Distribution and habitat

This insect is originally from India; however, it is now found in other parts of the world. In America, it can be found from Texas to California up to Utah, covering much of the southwest region of the United States. It was most likely introduced to North America in the late 1800s during the shipping of date palm cuttings from the Persian Gulf Region. [5]

During the day they spend most of their lives in silk tunnels beneath a rock or structure nearby a food source. In gardens their food source is frequently grass or some type of ornamental plant. [3] They are often found near the base of palm trees, [6] emerging from their tubes to feed on debris, dead plant material, mosses and lichens. [3]

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<i>Morus</i> (plant) Genus of plants

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Hooded oriole Species of bird

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<i>Papilio troilus</i> Species of butterfly

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Embioptera Order of insects

The order Embioptera, commonly known as webspinners or footspinners, are a small group of mostly tropical and subtropical insects, classified under the subclass Pterygota. The order has also been called Embiodea or Embiidina. More than 400 species in 11 families have been described, the oldest known fossils of the group being from the mid-Jurassic. Species are very similar in appearance, having long, flexible bodies, short legs, and only males having wings.

Harlequin cabbage bug Species of true bug

The harlequin cabbage bug, also known as calico bug, fire bug or harlequin bug, is a black stinkbug of the family Pentatomidae, brilliantly marked with red, orange, yellow and white markings. It is a major pest of cabbage and related crops in the Brassicaceae, as well as the ornamental flower cleome throughout tropical and North America, especially the warmer parts of the United States. Nymphs are active during the summer and in the tropics the bug can achieve three to six generations a year. In the northern range there is only one generation annually and the insects overwinter as adults in crop residues or field edges. Organic control involves hand-picking the insects off the plants and being especially careful to remove and destroy all the eggs, which are black-and-white striped, laid in clutches of twelve.

Differential grasshopper Species of grasshopper

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<i>Jalmenus evagoras</i> Species of butterfly

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Archipsocus nomas is a web-spinning barklouse, a psocid in the insect family Archipsocidae. It is found in the southeast of the United States, living gregariously on trees, feeding on and lichen and fungi and spinning a web that adheres to the trunk and large branches in sheets. The webs are thought to protect the barklice from predators and neither the insects nor the webs cause damage to the trees.

<i>Taeniopoda eques</i> Species of grasshopper

Taeniopoda eques, the western horse lubber grasshopper, is a relatively large grasshopper species of the family Romaleidae found in the arid lower Sonoran life zone of the southwestern United States and northern Mexico. Northern populations are identifiable by their shiny black bodies and black and yellow reticulated forewings. Some southern populations are yellow in the adult stage. The species is unique in using its black coloration to thermoregulate and in being chemically defended. The aposematic coloration warns vertebrate predators of its unpalatability and allows the grasshopper to roost conspicuously upon desert shrubs.

<i>Sungaya</i> Genus of stick insects

Sungaya is a monotypic genus of stick insects, containing the species Sungaya inexpectata. Its common name is the sunny stick insect, derived from the less commonly used sungay stick insect. The genus name refers to the locality of the holotype, i.e. the region where the insect was first identified. The species name is derived from the Latin as "inexpectatus" and means "unexpected".

<i>Anurogryllus arboreus</i> Species of cricket

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<i>Oligotoma</i> Genus of insects

Oligotoma is a genus of webspinners, insects in the order Embiidina, also known as Embioptera. The type species is Oligotoma saundersii and the type locality the Indian subcontinent. The males have wings but the females are flightless. Embiids are recognisable by the enlarged front tarsi, which contain a large number of silk glands that they use to spin the threads they use for building the tubes and galleries in which they live.

<i>Oligotoma saundersii</i> Species of insect

Oligotoma saundersii, commonly known as Saunders' embiid, is a species of webspinner, an insect in the order Embiidina, also known as Embioptera.

Aposthonia ceylonica is a species of webspinner of the family Oligotomidae native to tropical Asia, Madagascar and Mauritius. In February 2019, a colony of this insect was identified in a greenhouse at the RHS Garden, Wisley, Surrey, England, on the roots of an orchid. It was thought that the insects had been accidentally introduced on plants imported from Thailand.

Rhagadochir virgo is a species of webspinner, an insect in the order Embiidina, also known as Embioptera. This species is native to the Republic of the Congo in tropical West Africa.

Antipaluria urichi is a species of webspinner in the family Clothodidae. It is found in the Caribbean region and South America, the type locality being the island of Trinidad.

References

  1. 1 2 3 "Species Oligotoma nigra - Black Webspinner - BugGuide.Net". bugguide.net. Retrieved 2016-12-01.
  2. 1 2 "Oligotoma nigra Hagen, 1885". Embioptera Species File. Retrieved 2017-08-21.
  3. 1 2 3 4 5 "Texas Invasives". www.texasinvasives.org. Retrieved 2016-12-01.
  4. Eric Tentarelli (2012). A Guide to Insects. Blackwell. p. 265.
  5. Ross, E. (1957). "The Embioptera of California". Bull. Calif. Insect Sur. 6: 51–57.
  6. Powell, Jerry A.; Hogue, Charles L. (1980). California Insects. University of California Press. p. 382. ISBN   978-0-520-03782-3.